19．As everyone knows.the island China since ancient times．( )A．belonged toB．were belonging ——青夏教育精英家教网——

19．As everyone knows，the island ________ China since ancient times．（　　）

	A．	belonged to		B．	were belonging to
	C．	has belonged to		D．	were belonged to

18．-Can we ski on this mountain？
-Of course．However，at no time _______ you do so alone．（　　）

17．-The window is dirty．
-I know．It _______ for weeks．（　　）

	A．	hasn't cleaned		B．	didn't clean
	C．	wasn't cleaned		D．	hasn't been cleaned

16．The number of people present at the concert ________ than expected．There were many tickets left．（　　）

	A．	were much smaller		B．	was much smaller
	C．	were more		D．	was more

15．--Look out for the door．
--Why？
--Bill ________ the door．（　　）

	A．	has just painted		B．	was painting
	C．	has been painting		D．	painted

14．Over the past ten years，sea ice _________ in the Arctic because of global warming．（　　）

	A．	had decreased		B．	decreased
	C．	is decreasing		D．	has been decreasing

13．More praise to yourself，．you'll build up confidence throughout the hard times．（　　）

12．Great changes _____ in China in the past 30years and many Chinese are living a happy life today．（　　）

	A．	took place		B．	were taken place
	C．	have taken place		D．	have been taken place

11．In the past 5years，the number of deaths in the traffic accidents ______ by 10% across the country due to the new traffic law．（　　）

10．I ________ the new car for a month．（　　）

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